Journal
NANO LETTERS
Volume 11, Issue 2, Pages 820-824Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl1041534
Keywords
On-wire lithography; nanoparticle arrays; plasmon coupling; nanorods; rnulticomponent nanostructures
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Funding
- DoD
- DARPA
- AFOSR
- NSF MRSEC
- DOE Office [DE-SC0000989]
- NU Non-equilibrium Energy Research Center
- Northwestern University
- National Science Foundation
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We report the synthesis of solution dispersible, one-dimensional metal nanostructure arrays as small as 35 nm in diameter using on-wire lithography, wherein feature thickness and spacing in the arrays is tailorable down to approximately 6 and 1 nm, respectively. Using this unique level of control, we present solution-averaged extinction spectra of 35 nm diameter Au nanorod diners with varying gap sizes to illustrate the effect of gap on plasmon coupling between nanorods. Additionally, we demonstrate control over the composition of the arrays with Au Ni, and Pt segments, representing important advances in controlling the ordering of sub-100 nm nanostructures that are not available with current synthesis or assembly methods.
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